Sterilizer



B. W. BAKER Oct. 26, 1937.

STERILIZER Filed NOV. 18, 1935 2 Sheets-Sheet l B. W. BAKER STERILIZER Filed Nov. 18, 41935 Oct. 26, 1937. 2,096,838

2 Sheets-Sheet 2 Patented Oct. 26, 1937 arm UNITED STATES. PATENT OFFICE 2,096,838 i I j V STERILVIZER.

Bunyan W. Baker, Charlotte, N. 0.

Application November 18, 1935, Serial No. 50,449

2 Claims.

The object of my invention is to provide a novel device for efiectively sterilizing mattresses by means of heat; and to provide a device of this character which is less expensive to manufacture and operate than the devices of the prior art. I attain these and other objects of my invention by the mechanism illustrated in the accompanying drawings, in which.

Figure 1 is a side elevation of the invention, with the oven door closed;

Fig. 2 is a similar view with the oven door open;

Fig. 3 is a longitudinal section on line 3--3 of Fig. 4;

Fig. 4 is a transverse section on line 4-4 of Fig. 2; and

Fig. 5 is a section on either of the lines 5-5 of Fig. 1, showing my preferred arrangement of V- shaped strip IE on the edge of the door frame.

Like characters of reference designate like parts in each of the several views.

Referring to the accompanying drawings, the

letter I designates the sterilizer in its entirety; letter M designates a mattress; and letter P designates pillows; and A designates a standard Arcola furnace or stove. I provide a stove compartment I, which has an opening 2 for a chimney 3. In this compartment is placed a standard Arcola furnace or stove A, with the smoke pipe running to the chimney. Above the stove compartment l is a tin flue 4 having a slanting roof 24 which takes heat to the sterilizing compartment or oven 5 through opening 9 in end 8. The function of the slanting roof 24 is to cause the hot air to be evenly distributed in the oven. Were the roof of the flue just square, the heat would travel upward until it struck the top and would then be directed along the top of the oven,

instead of being distributed evenly through the oven as with the slanting roof. Both ends of the sterilizing compartment or oven are open at 9 to permit the heated air to pass from flue 4 through the screen III (which is provided to keep out any dust or ashes that may arise from the stove or heating unit) into and through the oven 5 and thence into the end compartment I I, whence it flows through the bottom compartment I2 and through the downflow pipe I3 to the chamber 1 beneath the Arcola furnace A, and thence to and upward through the chambers l3w within the stove compartment I which surrounds the furnace or stove. The screen I0 is placed only in the passage between the flue 4 and the oven 5, the end member 8 below the screen being a solid wall as shown in Fig. 3. a

The is provided with a a... hinged to the top by suitable hinges l5. Thetop front por tion 6 of the air compartment l2'carries latches I! which are slidably engageable overtheedge of the door l4 when the door is in closed position.

The door frame is provided with'a longitudinally extending tin or metal strip I6, v sh aped in cross section- This V-shaped strip I6; is fastened on the bottom andboth'sides of the oven door frame.

The bottom of the V is bolted: onto the doorframe, leaving the upper half of the side extending up until the door I4 is closed. When the door I4 is closed it presses the free side of the V against the side that is fastened and thereby makes the Valmost flat. w

The sterilizing compartment or oven has a series of L-shaped angle iron supports I8 on which are mounted lattice-work racks comprising the longitudinal bars I9 and cross bars 20, which are round in cross section, as shown in Fig. 2. These racks slide in and out on the supports I8 which are fastened to the sides of the oven. The entire outside of the oven is preferably covered with through the oven 5 and sterilizes themattresses M and pillows P or other bedding which maybe placed on the racks I9, 20. The heated air, after passing over and through the oven, flows into the end compartment I l. Thence, as it cools, it will, as indicated by arrows in Fig. 3, flow through the chambers l2, I3 and 1, respectively, to'the' chambers I311. surrounding the Arcola furnace in the stove compartment l to be re-heated and to again follow the same path throughthe sterilizer; The door I4 is hinged and swung open to place the bedding on the racks, and the door is then closed. When the door is closed its edge compresses the upper free side of the V-shaped metal device I6 and thereby makes a tight flt, as the V-striptakes up all slack or play in the makes the oven almost air-tight. What I claim is:'-

door and 1. In an apparatus for sterilizingmattresses, the combination of a stove compartment having I a stove, a vertically disposed flue adjacent and parallel'with the stove compartment, an elongated direct communication with the horizontally-diy posed bottom air chamber, an air chamber disposed under the stove and into which the aforesaid down-flow chamber opens, saidlast named air chamber being in communication with the vertically disposed flue adjacent the stove cornpartment, whereby the heat from the stove will cause a continuous circulation of air through the sterilizing compartment, and a wire screen interposed in the passage between the aforesaid flue and the aforesaid sterilizing compartment, the sterilizing compartment having a series'of spaced slidably mounted racks removably mounted in same. I i r 2. In an apparatus for sterilizing mattresses, the combination of astove compartment having a stove, a vertically disposed flue adjacent and parreturn conduit, a down-flow chamber at the end allel with the stove compartment, an elongated sterilizing compartment open at each end and in communication at one end with the aforesaid flue, a slanting roof on the flue extending to and terminating at the upper adjacent end of the sterilizing compartment, a vertically disposed air return conduit at the opposite end of the sterilizing compartment, a, horizontally disposed bottom air chamber in communication with the said air of the aforesaid horizontally disposed bottom air chamber in proximity to the stove compartment and in direct communication with the horizontally disposed bottom air chamber, an air chamber disposed under the stove and into which the 15 aforesaid down-flow chamber opens, said last named air chamber also opening into the vertically disposed flue which is positioned adjacent andparallel with the stove compartment, whereby the heat from the stove will cause a continuous circulation of air through the-sterilizing compartment and thence through the several chambers described to the flue for reheating and return to the sterilizing compartment, and a wire screen interposed in the passage between the i aforesaid flue and the sterilizing compartment for the purposes described. r

BUNYAN W. Bang, 

